Checks whether candidateLocation has to be updated when applying other.
false if the other does not affect the candidateLocation.NavigationLocation object if the candidateLocation has to be replaced with the return value.undefined if the candidate has to be deleted.If the otherLocation is not a ContentChangeLocation or it does not contain any actual content changes, this method returns with false
true if subRange is strictly contained in the range. Otherwise, false.
Navigation location updater with increased method visibility for testing.